[PATCH 0/3] selftests/mm: assert rmap behave as expected

[Wei Yang <richard.weiyang@gmail.com>]

As David suggested, currently we don't have a high level test case to
verify the behavior of rmap. This patch set introduce the verification
on rmap by migration.

Patch 1 is a trivial cleanup.
Patch 2 is a preparation to move ksm related operation into vm_util.
Patch 3 is the new test case.

Currently it covers following four scenarios:

  * anonymous page
  * shmem page
  * pagecache page
  * ksm page

RFC->v1:
  * open file in function itself instead of pass fd as paremeter
  * fault in the region by accessing it instead of print content

Wei Yang (3):
  selftests/mm: check a valid fd with negative value
  selftests/mm: put general ksm operation into vm_util
  selftests/mm: assert rmap behave as expected

 MAINTAINERS                                   |   1 +
 tools/testing/selftests/mm/.gitignore         |   1 +
 tools/testing/selftests/mm/Makefile           |   3 +
 .../selftests/mm/ksm_functional_tests.c       |  95 +---
 tools/testing/selftests/mm/rmap.c             | 470 ++++++++++++++++++
 tools/testing/selftests/mm/run_vmtests.sh     |   4 +
 tools/testing/selftests/mm/vm_util.c          | 111 +++++
 tools/testing/selftests/mm/vm_util.h          |   7 +
 8 files changed, 605 insertions(+), 87 deletions(-)
 create mode 100644 tools/testing/selftests/mm/rmap.c

-- 
2.34.1